Removing a value from a PHP Array

Question

Using PHP I\'m trying to remove an element from an array based on the value of the element.

For example with the following array:

Array
(
    [671] =         


        

Answer 1

foreach($array as $id => $data){
    foreach($data as $index => $offending_val){
         if($offending_val === 100){
            unset($array[$id][$index]);
         }
    }
}

Answer 2

You can use:

array_walk($your_array, function(&$sub, $key, $remove_value) {
    $sub = array_diff($sub, array($remove_value));
}, 100);

Answer 3

Couple of ideas:

You could try array_filter, passing in a callback function that returns false if the value is the one you want to unset. Using your example above:

$new_inner_array = array_filter($inner_array, $callback_that_returns_false_if_value_100)

If you want to do something more elaborate, you could explore the ArrayIterator class of the SPL, specifically the offsetUnset() method.